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[project @ 2002-05-01 06:48:35 by jwe]
author jwe
date Wed, 01 May 2002 06:48:36 +0000
parents 434790acb067
children 28ab079d8f0e
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1 ## Copyright (C) 1995, 1996, 1997 Friedrich Leisch
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 2, or (at your option)
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8 ## any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, write to the Free
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17 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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18 ## 02111-1307, USA.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} run_count (@var{x}, @var{n})
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22 ## Count the upward runs in the columns of @var{x} of length 1, 2, ...,
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23 ## @var{n}-1 and greater than or equal to @var{n}.
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24 ## @end deftypefn
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26 ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
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27 ## Description: Count upward runs
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29 function retval = run_count (x, n)
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31 [xr, xc] = size(x);
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32
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33 tmp = zeros (xr,xc);
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34 retval = zeros (n, xc);
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36 for j = 1 : xc
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37 run = 1;
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38 count = 1;
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39
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40 for k = 2 : xr
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42 if x(k, j) < x(k-1, j)
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43 tmp(run, j) = count;
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44 run = run + 1;
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45 count = 0;
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46 endif
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48 count = count + 1;
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50 endfor
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52 tmp(run, j) = count;
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54 endfor
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56 for k=1 : (n-1)
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57 retval(k, :) = sum (tmp == k);
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58 endfor
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59 retval(n, :) = sum (tmp >= n);
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60
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61 endfunction